爪哇语言简单工厂创立性模式介绍

package com.javapatterns.simplefactory; public interface FruitIF { 　void grow(); 　void harvest(); 　void plant(); 　String color = null; 　String name = null; }

　　　　　代码清单1. 接口FruitIF的源代码。这个接口确定了水果类必备的方法:种植plant(),生长grow(), 以及收获harvest()。

package com.javapatterns.simplefactory; public class Apple implements FruitIF { 　public void grow() 　{ 　　log("Apple is growing..."); 　} 　public void harvest() 　{ 　　log("Apple has been harvested."); 　} 　public void plant() 　{ 　　log("Apple has been planted."); 　} 　public static void log(String msg) 　{ 　　System.out.println(msg); 　} 　public int getTreeAge(){ return treeAge; } 　public void setTreeAge(int treeAge){ this.treeAge = treeAge; } 　private int treeAge; }

　　　　　代码清单2. 类Apple的源代码。萍果是多年生木本植物,因此具备树龄treeAge性质。